Flora of North America species comparison

1 or multiple, clustered, usually glabrous, rarely sparsely floccose-tomentose, leaf axils sometimes tomentose.

1, densely lanate-tomentose proximally, floccose-tomentose to glabrescent distally.

(and proximal cauline, relatively thick and turgid) petiolate;

blades lanceolate or narrowly oblanceolate, 20–40+ × 5–15 mm, bases tapering, margins usually entire, sometimes sub-pinnatisect (apices subentire or dentate).

(and proximal cauline) petiolate;

blades lanceolate to narrowly ovate or elliptic, 40–120+ × 20–50+ mm, bases tapering, sometimes oblique, margins subentire, crenate, or serrate-dentate.

gradually reduced (± petiolate or sessile).

gradually reduced (± petiolate or sessile, weakly clasping; dentate to pinnately lobed).

bracteate, glabrous or sparsely tomentose.

bracteate, sparsely to densely tomentose.

8–10(–13);

corolla laminae 5–8+ mm.

10 or 13;

corolla laminae 6–8+ mm.

45–60+;

corolla tubes 3–3.5 mm, limbs 4–5 mm.

50–60+;

corolla tubes 3.5–4 mm, limbs 3–3.5 mm.

13 or 21, green, 6–10 mm, sparsely tomentose proximally, glabrous distally.

13 or 21, light green, 5–8 mm, usually glabrous (sometimes hairy proximally).

inconspicuous.

inconspicuous.

4–15+ in corymbiform arrays.

10–30+ in open, corymbiform arrays (more in robust individuals).

1.5–2.5 mm, glabrous or sparsely hirtellous on ribs;

pappi 5–6 mm.

1–1.5 mm, hispid;

pappi 5–7 mm.

= 46.

= 46.